None of these are mine, but they might be of interests to some of you
Tom Aebis 8 keys cocus pratten’s
https://www.leboncoin.fr/instruments_de_musique/1714575893.htm/
6 keys Bb flute by Lehart
https://www.leboncoin.fr/instruments_de_musique/1702241349.htm/
3 keys Eb flute by Solen Lesouef
https://www.leboncoin.fr/instruments_de_musique/1695872374.htm/
And another Bb with no key by Lehart
https://www.leboncoin.fr/instruments_de_musique/1638992459.htm/